HiveServer2 throws NullPointerException when using Thrift

When using HiveServer2's Thrift interface, any attempt to send a query results in a NullPointerException with the following stack trace:

java.lang.NullPointerException
at org.apache.hive.service.cli.operation.ExecuteStatementOperation.newExecuteStatementOperation(ExecuteStatementOperation.java:78)
at org.apache.hive.service.cli.operation.OperationManager.newExecuteStatementOperation(OperationManager.java:79)
at org.apache.hive.service.cli.session.HiveSessionImpl.executeStatement(HiveSessionImpl.java:187)
at org.apache.hive.service.cli.CLIService.executeStatement(CLIService.java:154)
at org.apache.hive.service.cli.thrift.ThriftCLIService.ExecuteStatement(ThriftCLIService.java:190)
at org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1193)
at org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1178)
at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
at org.apache.hive.service.cli.thrift.TSetIpAddressProcessor.process(TSetIpAddressProcessor.java:38)
at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)

I've reverted to the Hive version shipped with 4.2.0, and it doesn't throw this stacktrace.